public override async void ViewAppeared()
        {
            base.ViewAppeared();

            if (isInitialAppearance)
            {
                isInitialAppearance = false;
                var hasToken = await authService.AcquireTokenSilently();

                if (hasToken)
                {
                    await HandleAppPermissions();
                }
                else
                {
                    authService.OnAuthChanged += HandleOnAuthChanged;
                    OnDisplayLogin?.Invoke();
                }
            }
        }